JPS60213627A - Thrust generator - Google Patents

Abstract

PURPOSE:To obtain a thrust generator with high efficiency by forming a jet nozzle with a cylindrical body having a high-pressure liquid feed port and a high- pressure air feed port and providing a guide cylinder with a fixed length so as to be connected to a high-pressure air nozzle body. CONSTITUTION:The high-pressure liquid and the high-pressure air are injected through injection ports 6, 7 in parallel with each other and gush through a guide cylinder 13. After being injected through the injection port 7, the high-pressure air maintains its straight direction via the inner wall of a guide cylinder 12 without decreasing the injection speed. On the other hand, the high-pressure liquid injected through the injection port 6 is accelerated by the negative pressure of a high-speed cylindrical air flow, thus allowing an extremely high-speed gush. The driving fluid consisting of the high-pressure liquid and the high-pressure air and gushing through an opening provided on one side of the connection section of a conveyance pipe 2 and a suction pipe 1 is injected in the gush direction along the central axis of the conveyance pipe 2, and a conveyed object is sucked by this negative pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention connects a suction tube for suctioning an object to be conveyed and a conveyance tube for conveying the object in a discharge direction in a bent manner, A jet nozzle provided on one side of the connection part injects high-pressure fluid into the transport pipe to apply thrust to the transported object, and is also used as a thrust generator necessary for propulsion of a ship.

Various thrust generators of this type are known, and can be broadly classified into two types. One method is to connect the suction pipe and the conveyance pipe in a straight line, and the other is to connect the two pipes in a bent manner. In the former case, the injection port is located at the rear of the suction pipe (
A jet nozzle is inserted one step before the conveyance pipe (downstream), and a negative pressure (suction blade) is applied to the conveyed object by injecting high-pressure fluid with its jet nozzle facing the flow direction of the conveyed object. This is a method of generating thrust by giving however,
In this method, since the jet nozzle is located at the above-mentioned position, it becomes a so-called "nod" against the flow of the sucked material, which obstructs the flow and creates a large frictional resistance, which naturally limits the particle size of the transported material. However, if the pressure of the jet water is increased too much, cavitation and vortex flow will occur, and the nozzle itself will be damaged by erosion and impact.

In order to eliminate this drawback, in the latter method, the suction pipe and the conveying pipe are connected in a bent manner, and the injection port is positioned 17 on the front side of the suction pipe and behind the conveying pipe. By mounting the jet nozzle on the shaped connection part, the formation of a throat part is avoided. In this case, the suction force of the driving liquid is used to suck air through an opening in the atmosphere, and the liquid flow is surrounded by air to prevent cavitation.
It has been proposed to efficiently deliver t+ttg power to a conveyed object. However, even in this method, since the object to be transported and the atmosphere are simultaneously sucked by negative pressure, the driving energy of the driving liquid is divided by 1 for both, resulting in the disadvantage that it is impossible to convert 100% into the object to be transported.

In addition, in any of the above methods, since the driving force is based only on the liquid, the loss of kinetic energy due to the eddy current generated when mixing with the conveyed object after injection and the frictional resistance of the inner wall of the pipe is still large, and this is It cannot be said that driving energy is minimized and applied to the transported object with maximum efficiency. In addition, since a large amount of the driving liquid itself is consumed, there is also an interstitial process in its processing, and furthermore, the object to be conveyed after mixing consumes extra driving force to compensate for the increased quality, resulting in a vicious cycle in which the suction force decreases accordingly. arise.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the drawbacks of the above-mentioned prior art and to provide a highly efficient thrust generating device for conveyed objects.

Therefore, the present invention is characterized in that the jet nozzle is formed from a cylindrical body having a high-pressure liquid supply port and a high-pressure gas supply port, and the cylindrical body includes a high-pressure liquid nozzle body that communicates with the high-pressure liquid supply port. and a high-pressure gas nozzle body which is concentrically inserted outside the high-pressure liquid injection port of the nozzle body and communicates with the high-pressure gas supply port, and high-pressure gas is formed between the two nozzle bodies. The jet nozzle for high-pressure liquid and the jet nozzle for high-pressure liquid are arranged so that their jet directions are parallel to each other, and the central axis of the jet nozzle is made to coincide with that of the conveying pipe, and the high-pressure gas nozzle of the high-pressure gas nozzle body is A guide tube of a certain length having an inner diameter equal to the inner diameter of the nozzle for high-pressure gas is provided on one side of the connection part so as to be continuous with the nozzle body for high-pressure gas, and both nozzle bodies are attached to and detached from the cylindrical body. The point is that it is replaceable.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

1 and 2 show an embodiment of a thrust generating device according to the present invention. A suction pipe 1 for sucking up conveyed objects such as liquids and solids is a conveying pipe 2 for conveying the conveyed objects in the discharge direction.
It is connected in a bent shape (acute angle shape). 3 is a jet nozzle that uses gas-liquid parallel two-layer flow as a driving source. The jet nozzle 3 consists of a cylindrical body 3', which has a high-pressure liquid supply port and a high-pressure gas supply port on the outer periphery of the cylindrical body 3', and a high-pressure liquid nozzle body 4 inside the cylindrical body 3'. and a high pressure gas nozzle body 5. The nozzle body 4 for high-pressure liquid consists of a ring 41 and a tubular body 4'' having a central hole that expands into a tapered shape. A pressurized liquid injection port 6 is formed. A high-pressure gas nozzle body 5 is inserted into the outer side of the tubular body 4'', and a gap is formed between the inner diameter of this nozzle body 5 and the outer diameter of the tubular body 4'', and its tip is inserted into the high-pressure gas nozzle body 5. Forms the injection lower. ゛The high-pressure liquid injection port 6 is the high-pressure liquid supply port 8.
The high-pressure gas injection lower is in communication with the high-pressure gas supply port 9I. Further, the high-pressure liquid injection port 6 and the high-pressure gas injection lower are arranged so that their injection directions are parallel to each other. The jet nozzle having such a configuration is attached to one side of the connection between the suction pipe 1 and the conveying pipe 2 so that its central axis coincides with that of the first conveying pipe.

In this case, a seven-rung portion 10 is provided at the tip of the jet nozzle for detachably attaching the jet nozzle to one side of the connecting portion, and a mating flange 10' is provided on the one side.
is provided and fixed with bolts 11 and appropriate means. In the flange part 10, a guide cylinder 13 of a certain length whose inner diameter matches the inner diameter of the high-pressure gas nozzle body 5 is fixed in a protruding manner on one side of the flange part, and a jet nozzle tip is fixed on the opposite side of the flange part 10. A connecting tube 12 is provided for attaching the jet nozzle to the flange portion, and the jet nozzle tip is detachably attached to the inner diameter of the connecting tube 12 by a method such as screwing.

7. When the rung section 10 is attached to one side of the connection section,
A recess 14 is formed between the outside of the guide tube 13 and the inside diameter of this connection.

The outer diameter of the high-pressure liquid nozzle body 4 is formed to be slightly larger than the inner diameter of the cylindrical body 3', and when the stepped part 151 of the cylindrical body 3' is fitted, it abuts against the front end of the step 151, thereby causing the A predetermined position of the nozzle body 4 can be determined. Similarly, the predetermined position of the nozzle body 5 can be determined by another step 16 of the cylindrical body 3'. Further, the rear end of the nozzle body 5 is fixed in contact with the flange portion 10 so that the inserted nozzle bodies 4 and 5 do not move due to the pressure of the high-pressure fluid. Therefore, nozzle bodies with optimal diameters are used depending on the flow rates and pressure changes of the high-pressure liquid and high-pressure gas.

In order to prevent the high-pressure liquid nozzle body 4 from being pushed out by the high-pressure liquid, a pin 1 is installed between the high-pressure liquid nozzle body 5 and the high-pressure liquid nozzle body 5.
7 will be provided.

Although the shape of the injection lower for high-pressure gas is annular in the illustration,
Alternatively, a plurality of small holes may be arranged on the same circumference. The diameter, number, etc. of the holes are appropriately selected as necessary.

Next, the operation of the thrust generating device having such a configuration will be explained. The lower end of the suction pipe 1 is immersed in an object to be transported such as water, sludge, slurry, etc. (not shown).

The high-pressure liquid and the high-pressure gas are injected from the injection ports 6.7 in parallel to each other and actually run inside the guide cylinder 13. Even after the high-pressure gas is ejected from the injection lower, it is impossible to diffuse beyond the inner wall of the guide tube 13, which matches the inner diameter of the high-pressure gas nozzle body 5, and due to its nature, the accelerated gas flows along the tube wall. Therefore, the straight direction of the high-pressure liquid is maintained without much flowing out to the injection passage side, and therefore, the injection speed is also maintained during this period without decreasing much. On the other hand, since the high-pressure liquid is injected into the cylindrical shape of the high-speed traveling airflow with maintained energy, the flow velocity of the high-pressure liquid injected from the injection port 6 is accelerated due to the negative pressure of the high-speed cylindrical airflow. This makes it possible to run at extremely high speeds. At the same time, the pressure inside the guide cylinder 13 becomes low, and the high-pressure liquid tries to diffuse to the inner wall of the guide cylinder 13. In this case, high-pressure gas flows instantly to fill the low-pressure area, giving enough time for cavitation to occur. do not have. And conveyor pipe 2 and suction pipe 1
This actually running driving fluid consisting of high-pressure liquid and high-pressure gas is ejected in the discharge direction along the central axis of the conveying pipe 2 from an opening provided on one side of the connection part, and at this time, due to the actual running of the fluid, The generated negative pressure (in the suction direction) suctions the object to be conveyed through the pipe 1 and sends it through the general feed pipe in the discharge direction. In this case, when the driving liquid mixes with the conveyed object, since the driving liquid is surrounded by high-pressure gas, the frictional resistance received from the conveying pipe 2 is small, and the conveyed object merges with the driving liquid. The walls of the high-pressure gas first absorb this resistance, so they merge and mix more smoothly.

In addition, negative pressure (
Due to the synergistic effect with the suction flow (suction direction), the jet flow of high-pressure liquid maintains the initial velocity at the time of jetting rather increases, and when it actually runs inside the conveyance pipe, an extremely large negative pressure (suction direction) is created inside the jet flow layer.
will occur.

Moreover, the attachment of the jet nozzle 3 to the connection part is as follows:
Since the flange portion 10 is provided at the tip and is detachable, the flow rate of high-pressure liquid and high-pressure gas can be increased.

It is possible to easily replace the nozzle bodies 4, 5 with the optimum diameter according to changes in pressure.

Therefore, the pressure and flow rate of the high-pressure gas and high-pressure liquid can be appropriately set so as to maintain the initial velocity of the jet stream of the high-pressure liquid at a rather accelerated rate, as described above.

As detailed above, in this thrust generation method, high-pressure liquid and high-pressure gas are injected in parallel from their respective injection ports, flowing as a parallel two-layer flow, and the liquid flow is surrounded by high-pressure gas, forming a guide tube in the shape of After actually running in the interior, it mixes with the transported object that has been sucked up, but even after mixing, it maintains its laminar flow shape and mixes and transports the transported object, so most of its kinetic energy is Since it is efficiently applied to the conveyed object as a suction blade and conveying force, it acts as an extremely efficient method of generating thrust.

Furthermore, since both the nozzle bodies and the jet nozzle can be easily attached to and removed from the main body of the apparatus, various flow rates and pressures can be used as required.

Moreover, there is nothing inside the conveyance pipe that would obstruct the conveyed object, and if the object is up to the inner diameter of the suction tube, it can be suctioned and conveyed with four functions. In addition, the water thrust generator uses high-pressure gas in parallel flow in addition to high-pressure liquid as the driving fluid, so 100% of the driving energy of the high-pressure liquid can be absorbed and used for general transport, and it can also be used locally. It is also possible to prevent the occurrence of cavitation (hollowing phenomenon) due to pressure drop. The synergistic effect with the high-pressure gas effectively reduces the vicious cycle in which the driving liquid becomes a transported object.

When the device is used, for example, as a propulsion device for a ship's hull, etc., when the suction pipe is submerged in water, the water to be sucked up as a transported object actually runs inside the transport pipe together with the high-pressure gas-liquid two-phase flow. , from the reaction I, the above-mentioned hull, etc. obtains propulsion, and also the air that is taken in when the suction pipe is on the water.
- Propulsive force can be obtained by reaction with the high-pressure gas-liquid two-phase flow during actual running.

The thrust generation according to the present invention is not limited to the device of the embodiment described in -L, but can be variously modified within the scope of the present invention. Further, the gas and liquid used are not limited to air and water, respectively, but any inert gas and liquid that have the same function and are not likely to explode under high pressure can be used.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of the main parts of the thrust generating device according to the present invention;
FIG. 2 is a cross-sectional view of the jet nozzle taken along the line XX. DESCRIPTION OF SYMBOLS 1... Suction pipe, 2... Conveyance pipe, 3... Jet nozzle, 4... Nozzle body for high pressure liquid, 5... Nozzle body for high pressure gas, 6... Injection for high pressure liquid Port, 7... High pressure gas injection port, 8... High pressure liquid supply port, 9... High pressure gas supply port, 10... 7 rung part, 13... Guide tube, 14... Recess . Patent applicant Mao? He Li Kaikai Agent Sickle 1) Text 2 Figure 1 Figure 2 °1

Claims (1)

[Claims] (1) A suction pipe for sucking up objects to be transported and a conveyance pipe for transporting objects to be transported in the discharge direction are connected in a bent manner,
A thrust generating device that injects high-pressure fluid into the transport pipe from a jet nozzle provided on one side of the connection part to apply thrust to the transported object.The jet nozzle has a high-pressure liquid supply port and a high-pressure gas supply port. The cylindrical body includes a high-pressure liquid nozzle body communicating with a high-pressure liquid supply port, and a high-pressure liquid nozzle body concentrically extrapolated to the outside of the high-pressure liquid jet port of the puzzle body. A high-pressure gas nozzle body communicating with the gas supply port is provided, and a high-pressure gas injection port and a high-pressure liquid injection port formed between both nozzle bodies are arranged so that their injection directions are parallel to each other. , and the central axis of the jet nozzle is aligned with that of the conveying pipe, and a guide cylinder of a certain length having an inner diameter roughly equal to the inner diameter of the high-pressure gas injection port of the high-pressure gas nozzle body is connected to the high-pressure gas nozzle. A thrust generating device, characterized in that the nozzle body is provided on one side of the connecting portion so as to be continuous with the body, and both the nozzle bodies are detachable and replaceable with respect to the cylindrical body. f2) At the tip of the M jet nozzle, 7 is provided for detachably attaching the jet nozzle to one side of the connection part.
1. The thrust generating device according to claim 1, further comprising a rung portion, and a connecting tube that can be freely screwed onto the cylindrical body on one side of the seven rung portions. (3) A guide tube whose inner diameter matches the inner diameter of the high-pressure gas nozzle body is inserted into the center hole of the flange section 111 of the flange section. The thrust generating device according to claim 2, wherein the thrust generating device is fixed to the side.